/Engine/Source/Editor/ContentBrowserData/Public/ContentBrowserDataSource.h
CompileFilter.
virtual void EnumerateItemsMatchingFilter ( const [FContentBrowserDataCompiledFilter](API\Editor\ContentBrowserData\FContentBrowserDataCompiledFilte-) & InFilter, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool([FContentBrowserItemData](API\Editor\ContentBrowserData\FContentBrowserItemData) &&)> InCallback )